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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 880286Generated: October 30, 2026

Trifluoroacetic acid → N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(piperazin-1-yl)benzamide

https://huagongshe.com/reaction/880286

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactanttert-butyl 4-(3-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxy propylcarbamoyl)phenyl)piperazine-1-carboxylateHCID 90242007—
SolventDichloromethaneHCID 6344—
ProductN-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(piperazin-1-yl)benzamideHCID 7690079557.9%

Reaction Conditions

Temperature27 °C

Reaction Steps

To a solution of tert-butyl 4-(3-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxy propylcarbamoyl)phenyl)piperazine-1-carboxylate (140 mg, 0.28 mmol) in DCM (2 mL) was added TFA (2 mL). The resulting solution was stirred at 27° C. for 4 h. The solution was concentrated and the residue was purified by prep-HPLC to give the title product (64.0 mg, Yield 57%). 1H NMR (CD3OD, 400 MHz): δ 7.47-7.38 (s, 1H), 7.31-7.21 (m, 2H), 7.19-7.08 (m, 4H), 7.08-7.01 (m, 1H), 4.13 (quin, J=6.0 Hz, 1H), 3.77 (s, 2H), 3.62-3.52 (m, 1H), 3.51-3.43 (m, 1H), 3.31-3.19 (m, 4H), 3.15-3.00 (m, 4H), 2.98-2.83 (m, 4H), 2.75-2.62 (m, 2H). LCMS (m/z): 395.2 (M+1).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08993555B2
Source datasetuspto-grants-2015_03
ORD IDord-c3bda1eee2ba4308aaf65c9177ddaa21
Source noteuspto-grants-2015_03